#4046 Fix hud vs inworld text color mismatch

This reverts commit e2cf375179.
Commit e9889ae originaly was meant to fix color mimatch between text and
face, but looks like it is no longer needed and instead adds mismatch
between inworld and hud.

indra/newview/llhudtext.cpp

@@ -225,10 +225,6 @@ void LLHUDText::renderText()
             }
 
             text_color = segment_iter->mColor;
-            if (mOnHUDAttachment)
-            {
-                text_color = linearColor4(text_color);
-            }
             text_color.mV[VALPHA] *= alpha_factor;
 
             hud_render_text(segment_iter->getText(), render_position, *fontp, style, shadow, x_offset, y_offset, text_color, mOnHUDAttachment);